OnCo

ARID1B (AT-rich interactive domain-containing protein 1B) is a protein that switches other genes on and off. The public catalogues list it as an oncogene driver, a tumour suppressor and a biomarker, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Breast cancer, Colorectal cancer, Renal cell carcinoma and 5 more. This dossier gathers the 0 products (0 approved), 0 trials, 0 pathways and 0 resistance routes in the corpus that involve it, with external identifiers so it can be joined to UniProt, ChEMBL, Open Targets and the rest of biology.

Biology

Involved in transcriptional activation and repression of select genes by chromatin remodeling (alteration of DNA-nucleosome topology). Component of SWI/SNF chromatin remodeling complexes that carry out key enzymatic activities, changing chromatin structure by altering DNA-histone contacts within a nucleosome in an ATP-dependent manner. Belongs to the neural progenitors-specific chromatin remodeling complex (npBAF complex) and the neuron-specific chromatin remodeling complex (nBAF complex). During neural development a switch from a stem/progenitor to a postmitotic chromatin remodeling mechanism occurs as neurons exit the cell cycle and become committed to their adult state. The transition from proliferating neural stem/progenitor cells to postmitotic neurons requires a switch in subunit composition of the npBAF and nBAF complexes. As neural progenitors exit mitosis and differentiate into neurons, npBAF complexes which contain ACTL6A/BAF53A and PHF10/BAF45A, are exchanged for homologous alternative ACTL6B/BAF53B and DPF1/BAF45B or DPF3/BAF45C subunits in neuron-specific complexes (nBAF). Location: Nucleus (UniProt). Locus 6q25.3 (HGNC).

Where it is found
  • Breast cancer: Open Targets association 0.59 with breast cancer (MONDO_0007254); IntOGen driver in 1 cohort (BRCA)
  • Colorectal cancer: Open Targets association 0.56 with colorectal cancer (MONDO_0005575); IntOGen driver in 2 cohorts (COADREAD)
  • Renal cell carcinoma: IntOGen driver in 2 cohorts (CCRCC, PRCC)
  • Endometrial cancer: Open Targets association 0.53 with endometrial cancer (MONDO_0011962); IntOGen driver in 1 cohort (UCEC)
  • Bladder & urothelial cancer: IntOGen driver in 1 cohort (BLCA)
  • Cervical cancer: IntOGen driver in 1 cohort (CEAD)
Class: transcription · Gene: ARID1B · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids

Products by modality and phase

Browse products →

No product in the corpus is aimed at this target yet.

No trial in the corpus names this target or one of its products.

Resistance routes

Unaddressed routes →

The resistance atlas has no route that names this target.

No pathway diagram carries this target as a node.

Companion diagnostics

Assay registry →

No companion diagnostic in the registry measures this target.

Preclinical models

All models →

No model entry for this target yet; check the cancer entries on the models page.

No open questions recorded for this target yet. Suggest one.

Literature

Preprints →
Latest papers · live from Europe PMC
Open in Europe PMC

Query for this target: (TITLE:"ARID1B" OR ABSTRACT:"ARID1B" OR TITLE:"AT-rich interaction domain 1B" OR ABSTRACT:"AT-rich interaction domain 1B" OR TITLE:"AT-rich interactive domain-containing protein 1B" OR ABSTRACT:"AT-rich interactive domain-containing protein 1B" OR TITLE:"KIAA1235" OR ABSTRACT:"KIAA1235" OR TITLE:"ELD/OSA1" OR ABSTRACT:"ELD/OSA1" OR TITLE:"p250R" OR ABSTRACT:"p250R") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about ARID1B, not a curated reading list.

Export

The dossier as machine-readable JSON: identifiers from HGNC, Ensembl, UniProt and ChEMBL, products with status, trials, pathways, hotspots, open questions and assays. The full entity record is in the open API at /api/v1/entities/arid1b.json. Licence CC BY-NC 4.0.